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Finding the Fourth Proportional to 10,129,615.26, 13,978,902.50 and 5,483,399.03

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Solution

The fourth proportional to 10,129,615.26, 13,978,902.50 and 5,483,399.03 is: 7,567,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129,615.26 : 13,978,902.50 = 5,483,399.03 : x
  2. Step 2: Convert to fraction form
    10,129,615.26/13,978,902.50 = 5,483,399.03/x
  3. Step 3: Cross multiply
    10,129,615.26x = 13,978,902.50 × 5,483,399.03
  4. Step 4: Simplify right side
    10,129,615.26x = 76,651,900,408,964.58
  5. Step 5: Solve for x
    x = 76,651,900,408,964.58/10,129,615.26
  6. Step 6: Final answer
    x = 7,567,108.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.